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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:52 -0500 |
commit | 074785cea106179cb3305637055ab0a009ca74f2 (patch) | |
tree | e6ae371cccd642aa2b67f39752a2cdf1fd4eb040 /files/pt-br/web/javascript/reference/global_objects/boolean/valueof | |
parent | da78a9e329e272dedb2400b79a3bdeebff387d47 (diff) | |
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initial commit
Diffstat (limited to 'files/pt-br/web/javascript/reference/global_objects/boolean/valueof')
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diff --git a/files/pt-br/web/javascript/reference/global_objects/boolean/valueof/index.html b/files/pt-br/web/javascript/reference/global_objects/boolean/valueof/index.html new file mode 100644 index 0000000000..e61d65033f --- /dev/null +++ b/files/pt-br/web/javascript/reference/global_objects/boolean/valueof/index.html @@ -0,0 +1,115 @@ +--- +title: Boolean.prototype.valueOf() +slug: Web/JavaScript/Reference/Global_Objects/Boolean/valueOf +translation_of: Web/JavaScript/Reference/Global_Objects/Boolean/valueOf +--- +<div>{{JSRef}}</div> + +<p>O método <code><strong>valueOf()</strong></code> retorna o valor primitivo de um objeto {{jsxref("Boolean")}}.</p> + +<h2 id="Sintaxe">Sintaxe</h2> + +<pre class="syntaxbox"><code><var>bool</var>.valueOf()</code></pre> + +<h3 id="Parâmetros">Parâmetros</h3> + +<p>Nenhum.</p> + +<h2 id="Descrição">Descrição</h2> + +<p>O método <code>valueOf do </code>{{jsxref("Boolean")}} retorna o valor primitivo de um objeto {{jsxref("Boolean")}} ou um literal {{jsxref("Boolean")}} como tipo de dado Boolean.</p> + +<p>Esse método é geralmente chamado internamente pelo JavaScript e não explicitamente no código.</p> + +<h2 id="Exemplos">Exemplos</h2> + +<h3 id="Usando_valueOf">Usando <code>valueOf</code></h3> + +<pre class="brush: js">x = new Boolean(); +myVar = x.valueOf(); // atribui o valor false à variável myVar +</pre> + +<h2 id="Especificações">Especificações</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Especificação</th> + <th scope="col">Condição</th> + <th scope="col">Comentário</th> + </tr> + <tr> + <td>{{SpecName('ES1')}}</td> + <td>{{Spec2('ES1')}}</td> + <td>Definição inicial. Implementado no JavaScript 1.1.</td> + </tr> + <tr> + <td>{{SpecName('ES5.1', '#sec-15.6.4.3', 'Boolean.prototype.valueOf')}}</td> + <td>{{Spec2('ES5.1')}}</td> + <td> </td> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-boolean.prototype.valueof', 'Boolean.prototype.valueOf')}}</td> + <td>{{Spec2('ES6')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Compatibilidade_com_Navegadores">Compatibilidade com Navegadores</h2> + +<div>{{CompatibilityTable}}</div> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Característica</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari</th> + </tr> + <tr> + <td>Suporte básico</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Característica</th> + <th>Android</th> + <th>Chrome para Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>IE Mobile</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + </tr> + <tr> + <td>Suporte básico</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + <td>{{CompatVersionUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="Veja_também">Veja também</h2> + +<ul> + <li>{{jsxref("Object.prototype.valueOf()")}}</li> +</ul> |